You need to allow direct access to the php file that you are getting the 403 on. So add
/plugins/system/plugin_googlemap3/plugin_googlemap3.css.php
to the Allow direct access to these files box under Exceptions. Then you need to regenerate your .htaccess file.
If you get another error, it should be on a different php file. If you continue to get errors, you can add the folder to the Allow direct access, including .php files, to these directories field instead of adding the php files one by one.
Dale L. Brackin
Support Specialist
English: native
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
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My time zone is
EST (UTC -5) (click here to see my current time in Philadelphia, PA)